Microsoft no longer provides jetcomp.exe as a standalone download on its official website because the tool is deprecated. Instead, it is included within two older official packages:
A Guide to Downloading and Understanding jetcomp.exe jetcomp.exe download
: Ensure the version of JetComp matches the Jet engine version (3.5 or 4.0) installed on your machine. Microsoft no longer provides jetcomp
: Create a blank database and try to import tables one by one. Check for Lock Files jetcomp.exe download